RE: how to broadcast extended ble 255byte packet with changeable data

Jared — Tue, 07 Jul 2020 14:26:59 GMT

Hi,

Your first question is answered here.
Scanning extended advertisement data is done by setting the extended parameter in the ble_gap_scan_params_t struct:

static ble_gap_scan_params_t m_scan_param =                 /**< Scan parameters requested for scanning and connection. */
{
    .active        = 0x01,
    .interval      = NRF_BLE_SCAN_SCAN_INTERVAL,
    .window        = NRF_BLE_SCAN_SCAN_WINDOW,
    .filter_policy = BLE_GAP_SCAN_FP_WHITELIST,
    .timeout       = SCAN_DURATION_WITELIST,
    .scan_phys     = BLE_GAP_PHY_1MBPS,
    .extended      = 1,
};

3. You can use the app timer together with ble_advertising_advdata_update() to update the data. The latter part of your question depends on the advertising interval you're using.